Guest malland Posted July 11, 2013 Share #1 Posted July 11, 2013 Advertisement (gone after registration) When I posted the M9 picture below in another forum a couple of people commented on the disturbing red noise in the edges. The picture was exposed at ISO 640 and pushed 2.3 stops (for an effective ISO of 3,328). However, I had looked at it in Lightroom 5 and had not really examined the exported JPG that I posted to the forum. In LR5, where I had applied some Luminance and Color Noise Reduction, the picture looked fine; and I assumed, when I read the comments on the noise, that it was the JPG compression that caused the color noise to be prominted in the JPG. However, then I found I the following statement from Adobe: As mentioned here, a bug was introduced in Lightroom 5.0 where files exported at less than 1/3 of their original size may not retain Output Sharpening and Noise Reduction settings. We are working on a solution and will include it in our next update. So this is merely an lR5 bug. It's amazing though that the Adobe beta testing process wasn't able to identify this JPG export problem before the final release. M9-P | Summicron-28 | ISO 640 pushed 2.3 stops | f/2.8 | 1/60 sec Bangkok —Mitch/Bangkok Bangkok Obvious [WIP] Eggleston said that he was "at war with the obvious"... Link to post Share on other sites More sharing options...
Advertisement Posted July 11, 2013 Posted July 11, 2013 Hi Guest malland, Take a look here LR5 – Major bug in JPG export. I'm sure you'll find what you were looking for!
Dougg Posted July 13, 2013 Share #2 Posted July 13, 2013 This looks like the red edges problem seen with wide angle lenses on the M9. It doesn't seem likely to be related to Output Sharpening and Noise Reduction in LR... Are you sure it doesn't appear in LR before export? And what if you export to a full-scale TIFF or JPEG? Link to post Share on other sites More sharing options...
Guest malland Posted July 14, 2013 Share #3 Posted July 14, 2013 No, it's not the red edge problem. Exported full scale files don't have the red edge and have less noise. Adobe admits that there is a problem on their blog. —Mitch/Bangkok Bangkok Obvious [WIP] Eggleston said that he was "at war with the obvious"... Link to post Share on other sites More sharing options...
Guest WPalank Posted July 14, 2013 Share #4 Posted July 14, 2013 This looks like the red edges problem seen with wide angle lenses on the M9. It doesn't seem likely to be related to Output Sharpening and Noise Reduction in LR... Are you sure it doesn't appear in LR before export? And what if you export to a full-scale TIFF or JPEG? Dougg, if you look at the green door behind the woman, you can see a horrible amount of Color Noise (which isn't near the edge). Link to post Share on other sites More sharing options...
Dougg Posted July 15, 2013 Share #5 Posted July 15, 2013 Examining closely... yes, all the darker areas suffer that bad chroma noise. And, if full-scale output doesn't share the red edges and noise, that seals it. Interesting... Fortunately, it's not a big issue for me, as I just export full-scale TIFF files, and then scale, sharpen, add border, and convert to jpeg externally. Doug Link to post Share on other sites More sharing options...
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